HTML Formatting tags in Notes not rendered in iOS app

Hello, I've been searching the forums for info on this problem. I have a few notes in my Notebook, and on the website version of the service, I used the HTML tags to format them, using the bold tags, list tags, etc. On the iOS app, these are not rendering. Instead, I see the text of the html tags themselves, which makes the notes unreadable. Am I doing something wrong? Is there some setting I missed? Is this a known issue?